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Simplifying 7x2 + 14x + 77 = 0 Reorder the terms: 77 + 14x + 7x2 = 0 Solving 77 + 14x + 7x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '7'. 7(11 + 2x + x2) = 0 Ignore the factor 7.Subproblem 1
Set the factor '(11 + 2x + x2)' equal to zero and attempt to solve: Simplifying 11 + 2x + x2 = 0 Solving 11 + 2x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-11' to each side of the equation. 11 + 2x + -11 + x2 = 0 + -11 Reorder the terms: 11 + -11 + 2x + x2 = 0 + -11 Combine like terms: 11 + -11 = 0 0 + 2x + x2 = 0 + -11 2x + x2 = 0 + -11 Combine like terms: 0 + -11 = -11 2x + x2 = -11 The x term is 2x. Take half its coefficient (1). Square it (1) and add it to both sides. Add '1' to each side of the equation. 2x + 1 + x2 = -11 + 1 Reorder the terms: 1 + 2x + x2 = -11 + 1 Combine like terms: -11 + 1 = -10 1 + 2x + x2 = -10 Factor a perfect square on the left side: (x + 1)(x + 1) = -10 Can't calculate square root of the right side. The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.
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